Other Assets and Deferred Charges, Net (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Costs And Other Assets [Line Items]
Amortization expense of deferred charges, net of discontinued operations	$ 7.2	$ 2.4	$ 2.6
Accumulated amortization of deferred lease origination costs	$ 10.6